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What is a “massive terrain”?
Too big to render using brute force
Too big to fit in RAM
For example: Puget Sound dataset
- Height sample every 10m, covers 160km by 160km
- 16K x 16K x 16 bits == 512 Mtris, 512 MB
- 32K x 32K texture – 3+ GB uncompressed; 60+ MB in JPEG format